KitKat is the only version of Android that has gained users in the last three months, and has finally surpassed the Ice Cream Sandwich version of Android for number of users. Of course, that version is already two-and-a-half years old.

But, KitKat has been adopted at a more rapid pace than Jelly Bean. In its first six months since its initial release, Jelly Bean hit 7.8% adoption, compared to 8.5% for KitKat's first six months.